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Thread: seats for aluminum heads

  1. #1
    Senior Member RACING JUNKIE
    Join Date
    Feb 2004
    Location
    san antonio, texas
    Posts
    1,233

    seats for aluminum heads

    this is my first set of aluminum heads that i am putting together,
    do the aluminum heads require cups for the springs so they don't
    damage the heads? i am using a mechanical roller cam and springs
    with a lift of .635 and 1.55 dia. spring w/damp seat pre: 135 @ 1.880
    and open pre: 350 @ 1.250 coil bind @ 1.150 the heads were new
    but out of a box and had no specs. thanx

  2. #2
    Member JUNIOR BUILDER
    Join Date
    Oct 2005
    Location
    ohio
    Posts
    94
    you deffinately need hardened spring cups or washers or the spring will cut into the head

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    Feb 2004
    Location
    san antonio, texas
    Posts
    1,233
    thanx bud, ordering the valves and all components that i might
    need to get these heads, i will ask if the valves should be longer
    with the seat added :?


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